ironic
A result that cuts against what was expected.
Ironic marks a contrast between what was expected and what occurred, or between what was said and what was meant. A wet day on the day you buy a hose is bad luck, not irony. Coincidence is not irony. Keep the word for the twist.
Examples
UseThe fire chief’s house burned. That was ironic.
AvoidIt rained on the picnic. How ironic.